Yes, I have had a TR4A lower A-arm mount break, luckily at low speed.
The Competition Preparation Manual recommended adding a second bolt to
the lower A-arm mounts for TR4As. TR250s and TR6s (which had
essentially
the same design for the front suspension) came with 2-bolt A-arm mounts.
When I broke mine, I replaced it with one from a TR6. All that was
required was to drill a second hole/slot where it mounts to the frame.
Keith Edwards
Suffolk, VA
http://www.norfolk.infi.net/~kedwards/photos/
4.5 TRs
Mquinn698@aol.com wrote:
>
> First of all I would like to thank all for the responses to my coil question.
> I spent the weekend putting the front suspension back on my TR4A and did not
> get a chance to get back to the coil to check it out but this leads me to a
> new question. Most of the bolts on the front suspension are at least 7/16"
> and all seem to be very solid, but why are the only thing that holds the
> bottom of the suspension only bolted to the frame with one 3/8" bolt on each
> side of the A arm. It seems to me like this would be under strength.
> Obviously it must work on our cars would not be 30+ years old but does it
> make sense? Has anyone ever had the lower arm break off?
>
> Thanks,
> --Mike Quinn
> 67 TR4A IRS
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